Set both reader index and writer index to 0. This will reset the state of this ByteBuffer to the state of a freshly allocated one, if possible without allocations. This is the cheapest way to recycle a ByteBuffer for a new use-case.
mutating func clear(minimumCapacity: Int) The minimum capacity that will be (re)allocated for this buffer
import NIOCoreThe core abstractions that make up SwiftNIO.
struct ByteBufferByteBuffer stores contiguously allocated raw bytes. It is a random and sequential accessible sequence of zero or more bytes (octets).
@frozen struct IntA signed integer value type.
init() Return an empty ByteBuffer allocated with ByteBufferAllocator().
init(_ view: ByteBufferView) Create a ByteBuffer from the given ByteBufferViews range.
init(buffer: ByteBuffer) Create a fresh ByteBuffer containing the readable bytes of buffer.
init<Bytes>(bytes: Bytes) where Bytes : Sequence, Bytes.Element == UInt8 Create a fresh ByteBuffer containing the bytes.
init(dispatchData: DispatchData) Create a fresh ByteBuffer containing the bytes contained in the given DispatchData.
init(from decoder: any Decoder) throws Creates a ByteByffer by decoding from a Base64 encoded single value container.
init<I>(integer: I, endianness: Endianness = .big, as: I.Type = I.self) where I : FixedWidthInteger Create a fresh ByteBuffer containing the bytes of the byte representation in the given endianness of integer.
init(plainHexEncodedBytes string: String) throws Create a fresh ByteBuffer containing the bytes decoded from the string representation of plainHexEncodedBytes.
init(repeating byte: UInt8, count: Int) Create a fresh ByteBuffer containing count repetitions of byte.
init(staticString string: StaticString) Create a fresh ByteBuffer containing the bytes of the string encoded as UTF-8.
init(string: String) Create a fresh ByteBuffer containing the bytes of the string encoded as UTF-8.
init(substring string: Substring) Create a fresh ByteBuffer containing the bytes of the string encoded as UTF-8.
var capacity: Int { get }The current capacity of the storage of this ByteBuffer, this is not constant and does not signify the number of bytes that have been written to this ByteBuffer.
var debugDescription: String { get }var description: String { get }A String describing this ByteBuffer including length and the bytes it contains (partially).
var readableBytes: Int { get }The number of bytes readable (readableBytes = writerIndex - readerIndex).
var readableBytesView: ByteBufferView { get }A view into the readable bytes of the ByteBuffer.
var readerIndex: Int { get }The reader index or the number of bytes previously read from this ByteBuffer. readerIndex is 0 for a newly allocated ByteBuffer.
var storageCapacity: Int { get }The current capacity of the underlying storage of this ByteBuffer. A COW slice of the buffer (e.g. readSlice(length: x)) will posses the same storageCapacity as the original buffer until new data is written.
var writableBytes: Int { get }The number of bytes writable until ByteBuffer will need to grow its underlying storage which will likely trigger a copy of the bytes.
var writerIndex: Int { get }The write index or the number of bytes previously written to this ByteBuffer. writerIndex is 0 for a newly allocated ByteBuffer.
static func == (lhs: ByteBuffer, rhs: ByteBuffer) -> Bool Compare two ByteBuffer values. Two ByteBuffer values are considered equal if the readable bytes are equal.
mutating func clear() Set both reader index and writer index to 0. This will reset the state of this ByteBuffer to the state of a freshly allocated one, if possible without allocations. This is the cheapest way to recycle a ByteBuffer for a new use-case.
@discardableResult mutating func copyBytes(at fromIndex: Int, to toIndex: Int, length: Int) throws -> Int Copies length bytes starting at the fromIndex to toIndex. Does not move the writer index.
@discardableResult mutating func discardReadBytes() -> Bool Discard the bytes before the reader index. The byte at index readerIndex before calling this method will be at index 0 after the call returns.
func encode(to encoder: any Encoder) throws Encodes this buffer as a base64 string in a single value container.
func getBytes(at index: Int, length: Int) -> [UInt8]? Get length bytes starting at index and return the result as [UInt8]. This will not change the reader index. The selected bytes must be readable or else nil will be returned.
func getDispatchData(at index: Int, length: Int) -> DispatchData? Get the bytes at index from this ByteBuffer as a DispatchData. Does not move the reader index. The selected bytes must be readable or else nil will be returned.
func getInteger<T>(at index: Int, endianness: Endianness = Endianness.big, as: T.Type = T.self) -> T? where T : FixedWidthInteger Get the integer at index from this ByteBuffer. Does not move the reader index. The selected bytes must be readable or else nil will be returned.
func getLengthPrefixedSlice<Integer>(at index: Int, endianness: Endianness = .big, as integer: Integer.Type) -> ByteBuffer? where Integer : FixedWidthInteger Gets an Integer from self and gets a slice of that length from self and returns it.
func getNullTerminatedString(at index: Int) -> String? Get the string at index from this ByteBuffer decoding using the UTF-8 encoding. Does not move the reader index. The selected bytes must be readable or else nil will be returned.
func getSlice(at index: Int, length: Int) -> ByteBuffer? Returns a slice of size length bytes, starting at index. The ByteBuffer this is invoked on and the ByteBuffer returned will share the same underlying storage. However, the byte at index in this ByteBuffer will correspond to index 0 in the returned ByteBuffer. The readerIndex of the returned ByteBuffer will be 0, the writerIndex will be length.
func getString(at index: Int, length: Int) -> String? Get the string at index from this ByteBuffer decoding using the UTF-8 encoding. Does not move the reader index. The selected bytes must be readable or else nil will be returned.
func getUTF8ValidatedString(at index: Int, length: Int) throws -> String? Get the string at index from this ByteBuffer decoding using the UTF-8 encoding. Does not move the reader index. The selected bytes must be readable or else nil will be returned.
func hash(into hasher: inout Hasher) The hash value for the readable bytes.
func hexDump(format: ByteBuffer.HexDumpFormat) -> String Returns a hex dump of this ByteBuffer in a preferred HexDumpFormat.
mutating func modifyIfUniquelyOwned<T>(_ body: (inout ByteBuffer) throws -> T) rethrows -> T? Modify this ByteBuffer if this ByteBuffer is known to uniquely own its storage.
mutating func moveReaderIndex(forwardBy offset: Int) Move the reader index forward by offset bytes.
mutating func moveReaderIndex(to offset: Int) Set the reader index to offset.
mutating func moveWriterIndex(forwardBy offset: Int) Move the writer index forward by offset bytes.
mutating func moveWriterIndex(to offset: Int) Set the writer index to offset.
func peekBytes(length: Int) -> [UInt8]? Returns the Bytes at the current reader index without advancing it.
func peekDispatchData(length: Int) -> DispatchData? Return a DispatchData object containing the bytes at the current reader index.
func peekInteger<T>(endianness: Endianness = .big, as: T.Type = T.self) -> T? where T : FixedWidthInteger Returns the integer at the current reader index without advancing it.
func peekLengthPrefixedSlice<Integer>(endianness: Endianness = .big, as integer: Integer.Type) -> ByteBuffer? where Integer : FixedWidthInteger Reads an integer length prefix at the current readerIndex, then returns a ByteBuffer slice of that length without advancing the reader index.
func peekMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15).Type = (
T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15
).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger, T12 : FixedWidthInteger, T13 : FixedWidthInteger, T14 : FixedWidthInteger, T15 : FixedWidthInteger func peekMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14).Type = (
T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14
).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger, T12 : FixedWidthInteger, T13 : FixedWidthInteger, T14 : FixedWidthInteger func peekMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13).Type = (
T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13
).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger, T12 : FixedWidthInteger, T13 : FixedWidthInteger func peekMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12).Type = (
T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12
).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger, T12 : FixedWidthInteger func peekMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11).Type = (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger func peekMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10).Type = (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger func peekMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9).Type = (T1, T2, T3, T4, T5, T6, T7, T8, T9).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger func peekMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8).Type = (T1, T2, T3, T4, T5, T6, T7, T8).self) -> (T1, T2, T3, T4, T5, T6, T7, T8)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger func peekMultipleIntegers<T1, T2, T3, T4, T5, T6, T7>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7).Type = (T1, T2, T3, T4, T5, T6, T7).self) -> (T1, T2, T3, T4, T5, T6, T7)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger func peekMultipleIntegers<T1, T2, T3, T4, T5, T6>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6).Type = (T1, T2, T3, T4, T5, T6).self) -> (T1, T2, T3, T4, T5, T6)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger func peekMultipleIntegers<T1, T2, T3, T4, T5>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5).Type = (T1, T2, T3, T4, T5).self) -> (T1, T2, T3, T4, T5)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger func peekMultipleIntegers<T1, T2, T3, T4>(endianness: Endianness = .big, as: (T1, T2, T3, T4).Type = (T1, T2, T3, T4).self) -> (T1, T2, T3, T4)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger func peekMultipleIntegers<T1, T2, T3>(endianness: Endianness = .big, as: (T1, T2, T3).Type = (T1, T2, T3).self) -> (T1, T2, T3)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger func peekMultipleIntegers<T1, T2>(endianness: Endianness = .big, as: (T1, T2).Type = (T1, T2).self) -> (T1, T2)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger func peekNullTerminatedString() -> String? Return a null-terminated String starting at the current reader index.
func peekSlice(length: Int) -> ByteBuffer? Returns a slice of size length bytes, starting at the current readerIndex. The ByteBuffer this is invoked on and the ByteBuffer returned will share the same underlying storage. However, the byte at readerIndex in this ByteBuffer will correspond to index 0 in the returned ByteBuffer. The readerIndex of the returned ByteBuffer will be 0, the writerIndex will be length.
func peekString(length: Int) -> String? Return a String decoded from the bytes at the current reader index using UTF-8 encoding.
func peekUTF8ValidatedString(length: Int) throws -> String? Return a UTF-8 validated String decoded from the bytes at the current reader index.
mutating func readBytes(length: Int) -> [UInt8]? Read length bytes off this ByteBuffer, move the reader index forward by length bytes and return the result as [UInt8].
mutating func readDispatchData(length: Int) -> DispatchData? Read length bytes off this ByteBuffer and return them as a DispatchData. Move the reader index forward by length.
mutating func readEncodedInteger<Strategy, Integer>(as: Integer.Type = Integer.self, strategy: Strategy) -> Integer? where Strategy : NIOBinaryIntegerEncodingStrategy, Integer : FixedWidthInteger Read a binary encoded integer, moving the readerIndex appropriately. If there are not enough bytes, nil is returned.
mutating func readInteger<T>(endianness: Endianness = .big, as: T.Type = T.self) -> T? where T : FixedWidthInteger Read an integer off this ByteBuffer, move the reader index forward by the integer’s byte size and return the result.
mutating func readLengthPrefixed<Integer, Result>(endianness: Endianness = .big, as integer: Integer.Type, readMessage: (ByteBuffer) throws -> Result?) throws -> Result? where Integer : FixedWidthInteger Reads an Integer from self, reads a slice of that length and passes it to readMessage. It is checked that readMessage returns a non-nil value.
mutating func readLengthPrefixedSlice<Integer>(endianness: Endianness = .big, as integer: Integer.Type) -> ByteBuffer? where Integer : FixedWidthInteger Reads an Integer from self and reads a slice of that length from self and returns it.
mutating func readLengthPrefixedSlice<Strategy>(strategy: Strategy) -> ByteBuffer? where Strategy : NIOBinaryIntegerEncodingStrategy Reads a slice which is prefixed with a length. The length will be read using strategy, and then that many bytes will be read to create a slice.
mutating func readMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15).Type = (
T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15
).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger, T12 : FixedWidthInteger, T13 : FixedWidthInteger, T14 : FixedWidthInteger, T15 : FixedWidthInteger mutating func readMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14).Type = (
T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14
).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger, T12 : FixedWidthInteger, T13 : FixedWidthInteger, T14 : FixedWidthInteger mutating func readMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13).Type = (
T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13
).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger, T12 : FixedWidthInteger, T13 : FixedWidthInteger mutating func readMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12).Type = (
T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12
).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger, T12 : FixedWidthInteger mutating func readMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11).Type = (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger mutating func readMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10).Type = (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger mutating func readMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9).Type = (T1, T2, T3, T4, T5, T6, T7, T8, T9).self) -> (T1, T2, T3, T4, T5, T6, T7, T8, T9)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger mutating func readMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8).Type = (T1, T2, T3, T4, T5, T6, T7, T8).self) -> (T1, T2, T3, T4, T5, T6, T7, T8)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger mutating func readMultipleIntegers<T1, T2, T3, T4, T5, T6, T7>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7).Type = (T1, T2, T3, T4, T5, T6, T7).self) -> (T1, T2, T3, T4, T5, T6, T7)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger mutating func readMultipleIntegers<T1, T2, T3, T4, T5, T6>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6).Type = (T1, T2, T3, T4, T5, T6).self) -> (T1, T2, T3, T4, T5, T6)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger mutating func readMultipleIntegers<T1, T2, T3, T4, T5>(endianness: Endianness = .big, as: (T1, T2, T3, T4, T5).Type = (T1, T2, T3, T4, T5).self) -> (T1, T2, T3, T4, T5)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger mutating func readMultipleIntegers<T1, T2, T3, T4>(endianness: Endianness = .big, as: (T1, T2, T3, T4).Type = (T1, T2, T3, T4).self) -> (T1, T2, T3, T4)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger mutating func readMultipleIntegers<T1, T2, T3>(endianness: Endianness = .big, as: (T1, T2, T3).Type = (T1, T2, T3).self) -> (T1, T2, T3)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger mutating func readMultipleIntegers<T1, T2>(endianness: Endianness = .big, as: (T1, T2).Type = (T1, T2).self) -> (T1, T2)? where T1 : FixedWidthInteger, T2 : FixedWidthInteger mutating func readNullTerminatedString() -> String? Read a null terminated string off this ByteBuffer, decoding it as String using the UTF-8 encoding. Move the reader index forward by the string’s length and its null terminator.
mutating func readSlice(length: Int) -> ByteBuffer? Slice length bytes off this ByteBuffer and move the reader index forward by length. If enough bytes are readable the ByteBuffer returned by this method will share the underlying storage with the ByteBuffer the method was invoked on. The returned ByteBuffer will contain the bytes in the range readerIndex..<(readerIndex + length) of the original ByteBuffer. The readerIndex of the returned ByteBuffer will be 0, the writerIndex will be length.
mutating func readString(length: Int) -> String? Read length bytes off this ByteBuffer, decoding it as String using the UTF-8 encoding. Move the reader index forward by length.
mutating func readUTF8ValidatedString(length: Int) throws -> String? Read length bytes off this ByteBuffer, decoding it as String using the UTF-8 encoding. Move the reader index forward by length.
@discardableResult mutating func readWithUnsafeMutableReadableBytes(_ body: (UnsafeMutableRawBufferPointer) throws -> Int) rethrows -> Int Yields a mutable buffer pointer containing this ByteBuffer’s readable bytes. You may modify the yielded bytes. Will move the reader index by the number of bytes returned by body but leave writer index as it was.
mutating func readWithUnsafeMutableReadableBytes<T>(_ body: (UnsafeMutableRawBufferPointer) throws -> (Int, T)) rethrows -> T Yields a mutable buffer pointer containing this ByteBuffer’s readable bytes. You may modify the yielded bytes. Will move the reader index by the number of bytes body returns in the first tuple component but leave writer index as it was.
@discardableResult mutating func readWithUnsafeReadableBytes(_ body: (UnsafeRawBufferPointer) throws -> Int) rethrows -> Int Yields an immutable buffer pointer containing this ByteBuffer’s readable bytes. Will move the reader index by the number of bytes returned by body.
mutating func readWithUnsafeReadableBytes<T>(_ body: (UnsafeRawBufferPointer) throws -> (Int, T)) rethrows -> T Yields an immutable buffer pointer containing this ByteBuffer’s readable bytes. Will move the reader index by the number of bytes body returns in the first tuple component.
mutating func reserveCapacity(_ minimumCapacity: Int) Reserves enough space to store the specified number of bytes.
mutating func reserveCapacity(minimumWritableBytes: Int) Reserves enough space to write at least the specified number of bytes.
@discardableResult mutating func setBuffer(_ buffer: ByteBuffer, at index: Int) -> Int Copy buffer’s readable bytes into this ByteBuffer starting at index. Does not move any of the reader or writer indices.
@discardableResult mutating func setBytes(_ bytes: UnsafeRawBufferPointer, at index: Int) -> Int Copy bytes into the ByteBuffer at index. Does not move the writer index.
@discardableResult mutating func setBytes<Bytes>(_ bytes: Bytes, at index: Int) -> Int where Bytes : Sequence, Bytes.Element == UInt8 Copy the collection of bytes into the ByteBuffer at index. Does not move the writer index.
@discardableResult mutating func setDispatchData(_ dispatchData: DispatchData, at index: Int) -> Int Write dispatchData into this ByteBuffer at index. Does not move the writer index.
@discardableResult mutating func setInteger<T>(_ integer: T, at index: Int, endianness: Endianness = .big, as: T.Type = T.self) -> Int where T : FixedWidthInteger Write integer into this ByteBuffer starting at index. This does not alter the writer index.
mutating func setNullTerminatedString(_ string: String, at index: Int) -> Int Write string null terminated into this ByteBuffer at index using UTF-8 encoding. Does not move the writer index.
@discardableResult mutating func setRepeatingByte(_ byte: UInt8, count: Int, at index: Int) -> Int Sets the given byte count times at the given index. Will reserve more memory if necessary. Does not move the writer index.
mutating func setStaticString(_ string: StaticString, at index: Int) -> Int Write the static string into this ByteBuffer at index using UTF-8 encoding, moving the writer index forward appropriately.
@discardableResult mutating func setString(_ string: String, at index: Int) -> Int Write string into this ByteBuffer at index using UTF-8 encoding. Does not move the writer index.
@discardableResult mutating func setSubstring(_ substring: Substring, at index: Int) -> Int Write substring into this ByteBuffer at index using UTF-8 encoding. Does not move the writer index.
@discardableResult mutating func shrinkBufferCapacity(to desiredCapacity: Int) -> Bool The ByteBuffer will successfully be shrunk if the requested capacity is less than the current capacity, and the requested capacity is greater than or equal to the number of readable bytes in the buffer. If either condition is not true, the buffer will not be shrunk.
func slice() -> ByteBuffer Slice the readable bytes off this ByteBuffer without modifying the reader index. This method will return a ByteBuffer sharing the underlying storage with the ByteBuffer the method was invoked on. The returned ByteBuffer will contain the bytes in the range readerIndex..<writerIndex of the original ByteBuffer.
func viewBytes(at index: Int, length: Int) -> ByteBufferView? Returns a view into some portion of the readable bytes of a ByteBuffer.
mutating func withUnsafeMutableReadableBytes<T>(_ body: (UnsafeMutableRawBufferPointer) throws -> T) rethrows -> T Yields a mutable buffer pointer containing this ByteBuffer’s readable bytes. You may modify those bytes.
mutating func withUnsafeMutableWritableBytes<T>(_ body: (UnsafeMutableRawBufferPointer) throws -> T) rethrows -> T Yields the bytes currently writable (bytesWritable = capacity - writerIndex). Before reading those bytes you must first write to them otherwise you will trigger undefined behaviour. The writer index will remain unchanged.
func withUnsafeReadableBytes<T>(_ body: (UnsafeRawBufferPointer) throws -> T) rethrows -> T Yields a buffer pointer containing this ByteBuffer’s readable bytes.
func withUnsafeReadableBytesWithStorageManagement<T>(_ body: (UnsafeRawBufferPointer, Unmanaged<AnyObject>) throws -> T) rethrows -> T Yields a buffer pointer containing this ByteBuffer‘s readable bytes. You may hold a pointer to those bytes even after the closure returned iff you model the lifetime of those bytes correctly using the Unmanaged instance. If you don’t require the pointer after the closure returns, use withUnsafeReadableBytes.
func withVeryUnsafeBytes<T>(_ body: (UnsafeRawBufferPointer) throws -> T) rethrows -> T This vends a pointer to the storage of the ByteBuffer. It’s marked as very unsafe because it might contain uninitialised memory and it’s undefined behaviour to read it. In most cases you should use withUnsafeReadableBytes.
func withVeryUnsafeBytesWithStorageManagement<T>(_ body: (UnsafeRawBufferPointer, Unmanaged<AnyObject>) throws -> T) rethrows -> T See withUnsafeReadableBytesWithStorageManagement and withVeryUnsafeBytes.
mutating func withVeryUnsafeMutableBytes<T>(_ body: (UnsafeMutableRawBufferPointer) throws -> T) rethrows -> T This vends a pointer to the storage of the ByteBuffer. It’s marked as very unsafe because it might contain uninitialised memory and it’s undefined behaviour to read it. In most cases you should use withUnsafeMutableWritableBytes.
@discardableResult mutating func writeBuffer(_ buffer: inout ByteBuffer) -> Int Write buffer’s readable bytes into this ByteBuffer starting at writerIndex. This will move both this ByteBuffer’s writer index as well as buffer’s reader index by the number of bytes readable in buffer.
@discardableResult mutating func writeBytes(_ bytes: UnsafeRawBufferPointer) -> Int Write bytes into this ByteBuffer. Moves the writer index forward by the number of bytes written.
@discardableResult mutating func writeBytes<Bytes>(_ bytes: Bytes) -> Int where Bytes : Sequence, Bytes.Element == UInt8 Write bytes, a Sequence of UInt8 into this ByteBuffer. Moves the writer index forward by the number of bytes written.
@discardableResult mutating func writeDispatchData(_ dispatchData: DispatchData) -> Int Write dispatchData into this ByteBuffer, moving the writer index forward appropriately.
@discardableResult mutating func writeEncodedInteger<Integer, Strategy>(_ value: Integer, strategy: Strategy) -> Int where Integer : FixedWidthInteger, Strategy : NIOBinaryIntegerEncodingStrategy Write a binary encoded integer.
@discardableResult mutating func writeImmutableBuffer(_ buffer: ByteBuffer) -> Int @discardableResult mutating func writeInteger<T>(_ integer: T, endianness: Endianness = .big, as: T.Type = T.self) -> Int where T : FixedWidthInteger Write integer into this ByteBuffer, moving the writer index forward appropriately.
@discardableResult mutating func writeLengthPrefixed<Integer>(endianness: Endianness = .big, as integer: Integer.Type, writeMessage: (inout ByteBuffer) throws -> Int) throws -> Int where Integer : FixedWidthInteger Prefixes a message written by writeMessage with the number of bytes written as an Integer.
@discardableResult mutating func writeLengthPrefixed<Strategy>(strategy: Strategy, writeData: (inout ByteBuffer) throws -> Int) rethrows -> Int where Strategy : NIOBinaryIntegerEncodingStrategy Prefixes bytes written by writeData with the number of bytes written. The number of bytes written is encoded using strategy.
@discardableResult mutating func writeLengthPrefixedBuffer<Strategy>(_ buffer: ByteBuffer, strategy: Strategy) -> Int where Strategy : NIOBinaryIntegerEncodingStrategy Write the length of buffer using strategy. Then write the buffer.
@discardableResult mutating func writeLengthPrefixedBytes<Bytes, Strategy>(_ bytes: Bytes, strategy: Strategy) -> Int where Bytes : Sequence, Strategy : NIOBinaryIntegerEncodingStrategy, Bytes.Element == UInt8 Write the length of bytes using strategy. Then write the bytes.
@discardableResult mutating func writeLengthPrefixedString<Strategy>(_ string: String, strategy: Strategy) -> Int where Strategy : NIOBinaryIntegerEncodingStrategy Write the length of string using strategy. Then write the string.
@discardableResult mutating func writeMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15>(_ value1: T1, _ value2: T2, _ value3: T3, _ value4: T4, _ value5: T5, _ value6: T6, _ value7: T7, _ value8: T8, _ value9: T9, _ value10: T10, _ value11: T11, _ value12: T12, _ value13: T13, _ value14: T14, _ value15: T15, endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15).Type = (
T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15
).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger, T12 : FixedWidthInteger, T13 : FixedWidthInteger, T14 : FixedWidthInteger, T15 : FixedWidthInteger @discardableResult mutating func writeMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14>(_ value1: T1, _ value2: T2, _ value3: T3, _ value4: T4, _ value5: T5, _ value6: T6, _ value7: T7, _ value8: T8, _ value9: T9, _ value10: T10, _ value11: T11, _ value12: T12, _ value13: T13, _ value14: T14, endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14).Type = (
T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14
).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger, T12 : FixedWidthInteger, T13 : FixedWidthInteger, T14 : FixedWidthInteger @discardableResult mutating func writeMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13>(_ value1: T1, _ value2: T2, _ value3: T3, _ value4: T4, _ value5: T5, _ value6: T6, _ value7: T7, _ value8: T8, _ value9: T9, _ value10: T10, _ value11: T11, _ value12: T12, _ value13: T13, endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13).Type = (
T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13
).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger, T12 : FixedWidthInteger, T13 : FixedWidthInteger @discardableResult mutating func writeMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12>(_ value1: T1, _ value2: T2, _ value3: T3, _ value4: T4, _ value5: T5, _ value6: T6, _ value7: T7, _ value8: T8, _ value9: T9, _ value10: T10, _ value11: T11, _ value12: T12, endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12).Type = (
T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12
).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger, T12 : FixedWidthInteger @discardableResult mutating func writeMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11>(_ value1: T1, _ value2: T2, _ value3: T3, _ value4: T4, _ value5: T5, _ value6: T6, _ value7: T7, _ value8: T8, _ value9: T9, _ value10: T10, _ value11: T11, endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11).Type = (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger, T11 : FixedWidthInteger @discardableResult mutating func writeMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>(_ value1: T1, _ value2: T2, _ value3: T3, _ value4: T4, _ value5: T5, _ value6: T6, _ value7: T7, _ value8: T8, _ value9: T9, _ value10: T10, endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10).Type = (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger, T10 : FixedWidthInteger @discardableResult mutating func writeMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8, T9>(_ value1: T1, _ value2: T2, _ value3: T3, _ value4: T4, _ value5: T5, _ value6: T6, _ value7: T7, _ value8: T8, _ value9: T9, endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8, T9).Type = (T1, T2, T3, T4, T5, T6, T7, T8, T9).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger, T9 : FixedWidthInteger @discardableResult mutating func writeMultipleIntegers<T1, T2, T3, T4, T5, T6, T7, T8>(_ value1: T1, _ value2: T2, _ value3: T3, _ value4: T4, _ value5: T5, _ value6: T6, _ value7: T7, _ value8: T8, endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7, T8).Type = (T1, T2, T3, T4, T5, T6, T7, T8).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger, T8 : FixedWidthInteger @discardableResult mutating func writeMultipleIntegers<T1, T2, T3, T4, T5, T6, T7>(_ value1: T1, _ value2: T2, _ value3: T3, _ value4: T4, _ value5: T5, _ value6: T6, _ value7: T7, endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6, T7).Type = (T1, T2, T3, T4, T5, T6, T7).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger, T7 : FixedWidthInteger @discardableResult mutating func writeMultipleIntegers<T1, T2, T3, T4, T5, T6>(_ value1: T1, _ value2: T2, _ value3: T3, _ value4: T4, _ value5: T5, _ value6: T6, endianness: Endianness = .big, as: (T1, T2, T3, T4, T5, T6).Type = (T1, T2, T3, T4, T5, T6).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger, T6 : FixedWidthInteger @discardableResult mutating func writeMultipleIntegers<T1, T2, T3, T4, T5>(_ value1: T1, _ value2: T2, _ value3: T3, _ value4: T4, _ value5: T5, endianness: Endianness = .big, as: (T1, T2, T3, T4, T5).Type = (T1, T2, T3, T4, T5).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger, T5 : FixedWidthInteger @discardableResult mutating func writeMultipleIntegers<T1, T2, T3, T4>(_ value1: T1, _ value2: T2, _ value3: T3, _ value4: T4, endianness: Endianness = .big, as: (T1, T2, T3, T4).Type = (T1, T2, T3, T4).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger, T4 : FixedWidthInteger @discardableResult mutating func writeMultipleIntegers<T1, T2, T3>(_ value1: T1, _ value2: T2, _ value3: T3, endianness: Endianness = .big, as: (T1, T2, T3).Type = (T1, T2, T3).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger, T3 : FixedWidthInteger @discardableResult mutating func writeMultipleIntegers<T1, T2>(_ value1: T1, _ value2: T2, endianness: Endianness = .big, as: (T1, T2).Type = (T1, T2).self) -> Int where T1 : FixedWidthInteger, T2 : FixedWidthInteger @discardableResult mutating func writeNullTerminatedString(_ string: String) -> Int Write string into this ByteBuffer null terminated using UTF-8 encoding, moving the writer index forward appropriately.
@discardableResult mutating func writePlainHexEncodedBytes(_ plainHexEncodedBytes: String) throws -> Int Write ASCII hexadecimal string into this ByteBuffer as raw bytes, decoding the hexadecimal & moving the writer index forward appropriately. This method will throw if the string input is not of the “plain” hex encoded format.
@discardableResult mutating func writeRepeatingByte(_ byte: UInt8, count: Int) -> Int Writes byte count times. Moves the writer index forward by the number of bytes written.
@discardableResult mutating func writeStaticString(_ string: StaticString) -> Int Write the static string into this ByteBuffer using UTF-8 encoding, moving the writer index forward appropriately.
@discardableResult mutating func writeString(_ string: String) -> Int Write string into this ByteBuffer using UTF-8 encoding, moving the writer index forward appropriately.
@discardableResult mutating func writeSubstring(_ substring: Substring) -> Int Write substring into this ByteBuffer using UTF-8 encoding, moving the writer index forward appropriately.
@discardableResult mutating func writeWithUnsafeMutableBytes(minimumWritableBytes: Int, _ body: (UnsafeMutableRawBufferPointer) throws -> Int) rethrows -> Int This vends a pointer of the ByteBuffer at the writerIndex after ensuring that the buffer has at least minimumWritableBytes of writable bytes available.
struct CopyBytesErrorErrors thrown when calling copyBytes.
struct HexDecodingErrorAn error that is thrown when an invalid hex encoded string was attempted to be written to a ByteBuffer.
struct HexDumpFormatDescribes a ByteBuffer hexDump format. Can be either xxd output compatible, or hexdump compatible.
struct LengthPrefixErrorstruct QUICBinaryEncodingStrategyA NIOBinaryIntegerEncodingStrategy which encodes bytes as defined in RFC 9000 § 16
struct ReadUTF8ValidationErrorErrors thrown when calling readUTF8ValidatedString or getUTF8ValidatedString.
typealias _Capacity = UInt32typealias _Index = UInt32mutating func clear(minimumCapacity: UInt32) Set both reader index and writer index to 0. This will reset the state of this ByteBuffer to the state of a freshly allocated one, if possible without allocations. This is the cheapest way to recycle a ByteBuffer for a new use-case.
@discardableResult mutating func set(buffer: ByteBuffer, at index: Int) -> Int Copy buffer’s readable bytes into this ByteBuffer starting at index. Does not move any of the reader or writer indices.
@discardableResult mutating func writeWithUnsafeMutableBytes(_ body: (UnsafeMutableRawBufferPointer) throws -> Int) rethrows -> Int